CMMVC9132E This will change the site of at least one host in the host cluster that already has a site defined. Use -force flag to continue.
Explanation
An attempt was made to change the site of the host cluster, which would change the site of at least one host in the host cluster.
User response
Make sure you specified the correct information in the command. If so, you can use the -force flag to forcibly change the site of one or more hosts in the host cluster. Using the -force flag can have unexpected results.